
Self-cleaning coop!

When I was a kid, back in the 1970's, my dad bought a bunch of wire cages used for commercial chickens. They were all wire cages with wire bottoms. IIRC, the wire used was 1 inch X 2 inches. I guess the idea was that the chicken poo would just fall through on the ground and they had a machine to clean the floor. But those wire cages were only maybe 1 foot wide by about 2 feet deep, and I think they kept 2 chickens in each stall. It must have been a miserable life for those chickens but then I assume they were culled after about 18 months. I never used those cages for chickens. We used the wire and made some nice rabbit cages, using 1/2 X 1 inch wire for the bottom. Worked great for my rabbits.
Although deep bedding and deep litter are not self cleaning, per se, most of us only have to clean out the coop once or twice a year. I clean out my coop twice a year because I use the coop litter to make compost for my gardens. Otherwise, I think I could easily go a full year without cleaning out the old litter in the coop. It takes me about a full hour to clean the coop, but I prefer that to using poop boards or trays that need to be cleaned out daily or weekly as required.
Also, I live in northern Minnesota, and for about 6 months of the year we are in frozen weather and the chicken poo turns hard as rocks. During the winter months, the chicken poo accumulates in the coop, mainly under the roosting bars, but we just throw fresh layers of litter on top of the old. Keeps the coop looking good and fresh. In the spring, that's when I do my big cleaning. It's not self-cleaning, but minimal cleaning required.

Before I built my chicken coop, I spent about 1 year talking to chicken owners in my area on how they take care of their chickens, with an eye especially on our winter months. Nobody I talked to used poop boards or trays where I live. Everyone was using some type of deep bedding, especially in the winter when it's next to impossible to clean out a coop. It seemed like the best method for me to use as well. Again, I think location matters and I'm sure my coop would not have near enough ventilation needed for a coop in southern Florida, for example. But it works for where I live.